ITT Goulds Pumps 3405, Инструкции по установке, эксплуатации и обслуживанию

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Figure 19:
Never use hammer blows to drive shaft through bearings. Protect bearings from dirt or other con-
tamination.
13. Slide ball bearing collar (237 off of shaft) (122).
14. Slide bearing housings from shaft. Remove deflectors (123) from both ends of shaft. On the Model
3406, remove cap screws from bearing housing covers (160) on both bearing housings and lift out
oil rings (114). Preserve bearing housing cover gaskets (360A).
15. Slip casing wearing rings (103 or 127) from impeller and off rotating element.
16. Slide packing, lantern rings (105) and stuffing box bushings (125) off ends of shaft.
17. Smooth the exposed portions of the shaft at the ends of the sleeves with fine emery cloth so that
sleeves will not bind while being removed.
18. The shaft sleeve (1266) must be removed first. This is the sleeve with the spanner holes. Loosen
set screw in sleeve (if supplied) - previous design did not have set screws. Unscrew sleeve from
shaft with a pin spanner or a strap wrench. Shaft to sleeve threads are right hand. Do not use pipe
wrench. Never attempt to remove the sleeve (104) which has no spanner holes until impeller and
impeller key are removed from shaft.
19. Tap the impeller (101) from shaft with a lead mall. Tap evenly around the impeller as near as possi-
ble to the shaft. Do not drive against the sealing surface on end of hub. Do not let the key "ride up"
on the exposed curved portion of the sled runner keyway.
Should the impeller key start to "ride" as the impeller is being removed, the key can be driven back
by a drift pin or piece of keystock a size smaller than the impeller key.
20. Remove key from keyway.
21. Unscrew and remove the remaining sleeve from shaft by hand or with a strap wrench. Shaft to
sleeve threads are right hand. This completes the disassembly of the pump.
7.5 Reassembly of pump
The following directions are for use when the pump is completely dismantled and it is desired to reas-
semble.
Figure 21: Left hand pump on page 48 and Figure 22: Right hand pump on page 49 illustrate
the steps described in the following. The basic instructions are for a Model 3405 pump. Where reassem-
bly of the Model 3406 or 3416 pumps differ the necessary supplementary instructions are included.
1. Check shaft to see that it is not bent or otherwise damaged, and that it is also smooth and clean.
Inspect "O" Rings (412 and 412A). Replace if damaged. Position "O" Rings (412) inside shaft
sleeves as shown in the
7.3 Sectional view on page 39 .
2. Determine the correct setting of the impeller and sleeves on the shaft in relation to the rotation of
the pump. To do this, face the discharge flange of pump. The locking shaft sleeve must be on the
right as shown in
Figure 20: on page 47 and the impeller must rotate in correct relation to the cas-
ing as shown in the end views in Figure 20: on page 47 .
7.5 Reassembly of pump
46 3405-3406-3416 Installation, Operation and Maintenance Instructions